[OS X TeX] ! No room for a new \count .

[Themis Matsoukas]

>> Howdy,
>> 
>> First, are you using pdflatex or xelatex? If the former there is no problem, if the latter I think using the etex package may `fix' things up from what was said.
>> 
>> Good Luck,
>> 
>> Herb Schulz
>> (herbs at wideopenwest dot com)
>> 
> 
> I use mtpro2.sty all the time, and I can confirm that pdflatex is no problem for MacTex 2016. For lualatex and xelatex there seems to be a problem when too many packages are loaded, but \usepackage{etex} seems to fix it.
> 
> 

Oh good — I only use pdftex.

Themis